Version 1
: Received: 9 February 2024 / Approved: 12 February 2024 / Online: 12 February 2024 (10:50:21 CET)
How to cite:
Mishra, A.; Dey, A.; Mishra, A.; Mohakud, S.K.; Farooq, S.H. Mono-Specific Data Deficient Saltmarsh Species Has Climate Relevant Carbon Stocks From the East Coast of India. Preprints2024, 2024020653. https://doi.org/10.20944/preprints202402.0653.v1
Mishra, A.; Dey, A.; Mishra, A.; Mohakud, S.K.; Farooq, S.H. Mono-Specific Data Deficient Saltmarsh Species Has Climate Relevant Carbon Stocks From the East Coast of India. Preprints 2024, 2024020653. https://doi.org/10.20944/preprints202402.0653.v1
Mishra, A.; Dey, A.; Mishra, A.; Mohakud, S.K.; Farooq, S.H. Mono-Specific Data Deficient Saltmarsh Species Has Climate Relevant Carbon Stocks From the East Coast of India. Preprints2024, 2024020653. https://doi.org/10.20944/preprints202402.0653.v1
APA Style
Mishra, A., Dey, A., Mishra, A., Mohakud, S.K., & Farooq, S.H. (2024). Mono-Specific Data Deficient Saltmarsh Species Has Climate Relevant Carbon Stocks From the East Coast of India. Preprints. https://doi.org/10.20944/preprints202402.0653.v1
Chicago/Turabian Style
Mishra, A., Sandip Kumar Mohakud and Syed Hilal Farooq. 2024 "Mono-Specific Data Deficient Saltmarsh Species Has Climate Relevant Carbon Stocks From the East Coast of India" Preprints. https://doi.org/10.20944/preprints202402.0653.v1
Abstract
Despite saltmarshes being considered as nature-based solutions (NbS) towards climate change mitigation, India’s saltmarsh ecosystems are least studied. This study quantifies the seasonal variation in carbon stocks mono-specific saltmarsh species (Porteresia coarctata) and its potential to play an important role in India’s climate change mitigation plans. Seasonal (pre-and post-monsoon) sampling of P. coarctata surface water, biomass and 30 cm sediment core was collected across four locations on the east coast of India to quantify sediment dry bulk density (DBD), organic matter (OM%), organic carbon (Corg%), Corg stocks of sediment and biomass, total carbon (C%) and nitrogen (N%) and stable isotopes of δ13C and δ15N. In general, the sediment DBD, OM and Corg of P. coarctata meadows was higher in post-monsoon and was influenced by salinity and pH changes. Isotope (δ13C) modelling of various sediment C sources suggested, particulate organic matter (POM) contribution was highest (0.04-0.79%) followed by P. coarctata (0.01–052%) and other macrophytes across our study locations. The seasonal variation of δ13C showed increased contribution of marine derived particulate and dissolved organic matter into P. coarctata meadows in post-monsoon season. Heavier δ15N values were observed in post-monsoon season suggesting anthropogenic input, that was utilized by P. coarctata to increase its above and below-ground biomass and shoot density. The combined ecosystem (30 cm sediment + biomass) Corg stocks of P. coarctata was 1.7-fold higher in post-monsoon (4021.20± 917 Mg C) compared to pre-monsoon (2297.36 ±647 Mg C) season among the four locations with a sediment Corg contribution >70%. Based on the International Panel for Climate Change Tier II assessment the P. coarctata meadows (443 ha) can help in avoiding the pre and post-monsoon emissions of 8431.34 and 14757.84 Mg CO2 respectively. The combined price of the total CO2 equivalent stored in P. coarctata meadows in pre- and post-monsoon is US$ 14.50 and US$ 25.38 million respectively. Further studies quantifying the NbS potential of P. coarctata mono-specific and mixed meadows of India’s coast is needed along with integration of saltmarsh ecosystems into India’s National Action Plan on Climate Change.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
